Results 41 to 50 of about 267,926 (301)

Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control [PDF]

open access: yes, 2014
Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both charging and discharging ...
Aboushady, A.A.   +3 more
core   +3 more sources

Complete active-reactive power resource scheduling of smart distribution system with high penetration of distributed energy resources

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
In traditional power systems, besides the conventional power plants that provide the necessary reactive power in transmission system, the shunt capacitors along with the tap changers of transformers are also employed in distribution networks.
Abouzar SAMIMI, Mehdi NIKZAD
doaj   +1 more source

Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms’ Operation

open access: yesEnergies, 2018
The share of photovoltaic (PV) farms is increasing in the energy mix as power systems move away from conventional carbon-emitting sources. PV farms are equipped with an expensive power converter, which is, most of the time, used well bellow its rated ...
Luís F. N. Lourenço   +4 more
doaj   +1 more source

Reactive power based fair calculation approach for multiobjective load dispatch problem [PDF]

open access: yesArchives of Electrical Engineering, 2019
This paper proposes a fair calculation approach for the cost and emission of generators. Generators also have reactive power requirements along with the active power demand to meet up the total power demand.
Harinder Pal Singh   +2 more
doaj   +1 more source

Impedance-compensated grid synchronisation for extending the stability range of weak grids with voltage source converters [PDF]

open access: yes, 2016
This paper demonstrates how the range of stable power transfer in weak grids with voltage source converters (VSCs) can be extended by modifying the grid synchronisation mechanism of a conventional synchronous reference frame phase locked loop (PLL).
D'Arco, Salvatore   +3 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Assessment and enhancement of transfer capability for large-scale renewable generation base transmitted by voltage source converter based high voltage direct current system

open access: yesInternational Journal of Electrical Power & Energy Systems
Voltage source converter based high voltage direct current transmission is a key method for transmitting large-scale renewable energy generation. The transfer capability of large-scale renewable generation base transmitted by voltage source converter ...
Shiyuan Chen   +4 more
doaj   +1 more source

Stability analysis of grid-connected PV generation with an adapted reactive power control strategy

open access: yesThe Journal of Engineering, 2019
The static VAR compensator is widely applied in large-scale grid-connected photovoltaic (PV) generation to participate in voltage regulation of power system, which ignores the reactive power regulation capability of PV inverter.
Gangui Yan   +3 more
doaj   +1 more source

Reactive power minimization of dual active bridge DC/DC converter with triple phase shift control using neural network [PDF]

open access: yes, 2014
Reactive power flow increases dual active bridge (DAB) converter RMS current leading to an increase in conduction losses especially in high power applications.
Aboushady, Ahmed   +2 more
core   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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